EP0568322B1 - A cooking utensil and a method of forming same - Google Patents

A cooking utensil and a method of forming same Download PDF

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Publication number
EP0568322B1
EP0568322B1 EP19930303288 EP93303288A EP0568322B1 EP 0568322 B1 EP0568322 B1 EP 0568322B1 EP 19930303288 EP19930303288 EP 19930303288 EP 93303288 A EP93303288 A EP 93303288A EP 0568322 B1 EP0568322 B1 EP 0568322B1
Authority
EP
European Patent Office
Prior art keywords
layer
substrate
cooking utensil
stainless steel
sprayed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19930303288
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0568322A3 (enrdf_load_stackoverflow
EP0568322A2 (en
Inventor
Stanley Kin-Sui Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meyer Manufacturing Co Ltd
Original Assignee
Meyer Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meyer Manufacturing Co Ltd filed Critical Meyer Manufacturing Co Ltd
Publication of EP0568322A2 publication Critical patent/EP0568322A2/en
Publication of EP0568322A3 publication Critical patent/EP0568322A3/xx
Application granted granted Critical
Publication of EP0568322B1 publication Critical patent/EP0568322B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • B05D5/086—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers having an anchoring layer
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay

Definitions

  • This invention relates to a cooking utensil more particularly but not exclusively to cooking pans used in circumstances where foodstuffs are likely to adhere to one or more surfaces thereon.
  • forming the corrugated surface may be readily effected by machining the surface of the pan prior to a hardening (anodizing) process.
  • machining of the corrugations is not a practical manufacturing technique. It is an object of the invention to provide cooking apparatus, and a method of producing same which is more applicable for use with pans made of harder materials.
  • the corrugated surface is formed by forging or pressing.
  • the substrate is roughened by grit blasting and the non-stick layer, preferably a PTFE multi-layer coating, is applied to the grit blasted, arc-sprayed surface.
  • the non-stick layer preferably a PTFE multi-layer coating
  • a pan formed in accordance with the invention has a corrugated surface giving the advantages of the pan of US4768427, with the additional benefits of formation from a relatively hard material such as stainless steel and improved non-stick layer wearability, due to the combined anchoring effect of grit blasting and arc-spraying the substrate.
  • an embodiment of the invention is shown which is a kitchen utensil in the form of a frying pan.
  • the frying pan is provided with a heat receiving substrate 100 comprised of a heat receiving stainless steel layer 105, a cooking surface substrate 110 both formed from stainless steel of standard composition (ie Chromium 18%, Nickel 5%, Manganese 8.5% and the remainder Carbon Steel), which together sandwich an aluminium layer 115.
  • a heat receiving substrate 100 comprised of a heat receiving stainless steel layer 105, a cooking surface substrate 110 both formed from stainless steel of standard composition (ie Chromium 18%, Nickel 5%, Manganese 8.5% and the remainder Carbon Steel), which together sandwich an aluminium layer 115.
  • the substrate 110 is provided with a pattern of corrugations 200 (see Figure 1) forming square depressions of depth 0.30mm side length 2.85mm formed between ridges of width 1.65mm.
  • the corrugations are formed in the substrate 110 by application of a circular die on the base of the pan under pressure, eg in a stamping press optionally under the influence of heat.
  • the substrate 110 is then grit-blasted to form a grit blasted surface 111, and then the substrate is arc-sprayed with a stainless steel alloy wire of the same composition as the pan substrate 110 to form a particulate arc sprayed layer 112.
  • the grit-blasting creates an initial rough surface 111 with the arc-spraying then creating a further, rougher surface with greater surface area for good adhesion of the non-stick coating.
  • the arc-sprayed substrate also improves the coating's abrasion resistance.
  • the non-stick coating is sprayed onto the treated substrate in three layers, a primer coat, PTFE intermediate coat and PTFE top coat 125, 130, 135 in a manner known per se.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Frying-Pans Or Fryers (AREA)
  • Cookers (AREA)
EP19930303288 1992-05-01 1993-04-27 A cooking utensil and a method of forming same Expired - Lifetime EP0568322B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9209478 1992-05-01
GB929209478A GB9209478D0 (en) 1992-05-01 1992-05-01 Cooking apparatus

Publications (3)

Publication Number Publication Date
EP0568322A2 EP0568322A2 (en) 1993-11-03
EP0568322A3 EP0568322A3 (enrdf_load_stackoverflow) 1994-03-23
EP0568322B1 true EP0568322B1 (en) 1997-08-13

Family

ID=10714878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930303288 Expired - Lifetime EP0568322B1 (en) 1992-05-01 1993-04-27 A cooking utensil and a method of forming same

Country Status (5)

Country Link
EP (1) EP0568322B1 (enrdf_load_stackoverflow)
AU (1) AU3829493A (enrdf_load_stackoverflow)
CA (1) CA2095312A1 (enrdf_load_stackoverflow)
DE (1) DE69313000D1 (enrdf_load_stackoverflow)
GB (1) GB9209478D0 (enrdf_load_stackoverflow)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2716101B1 (fr) * 1994-02-15 1996-04-26 Seb Sa Récipient culinaire à fond renforcé et son procédé de fabrication.
WO1996019300A1 (en) * 1994-12-22 1996-06-27 E.I. Du Pont De Nemours And Company Cookware with smooth-rough pattern
FR2743742B1 (fr) * 1996-01-24 1998-04-03 Seb Sa Procede de traitement d'une surface metallique et de fabrication d'un article culinaire
GB2350538B (en) * 1996-06-13 2001-01-31 Strix Ltd Electric liquid heating vessels
US6123999A (en) * 1997-03-21 2000-09-26 E. I. Du Pont De Nemours And Company Wear resistant non-stick resin coated substrates
CN1240331C (zh) * 2004-02-02 2006-02-08 吉林大学 不粘炊具
DE102004027717A1 (de) * 2004-06-07 2005-12-22 Accuride International Gmbh Beschichtete Teleskopschiene
US20080142526A1 (en) * 2006-12-19 2008-06-19 Meyer Intellectual Properties Limited Induction Cookware
EP2140786B1 (en) 2008-07-01 2011-07-27 Icb N.V. Cooking utensil with removable and/or exchangeable bottom
US10537915B2 (en) * 2008-09-15 2020-01-21 The Boeing Company Contaminant resistant coating fabrication structure and method
US10188103B2 (en) 2008-09-15 2019-01-29 The Boeing Company Antimicrobial coating fabrication method and structure
CN103612438B (zh) * 2011-08-05 2015-10-28 缙云县太极科技有限公司 一种具有不粘表面的不锈钢制品的处理工艺
CN103142132B (zh) * 2013-03-19 2015-05-27 叶雪霞 一种不锈钢或复合钢的不粘锅的制造方法
US20150367481A1 (en) 2014-06-23 2015-12-24 Les Promotions Atlantiques Inc. / Atlantic Promotions Inc. Method of treating a surface of a utensil
EP2960017A1 (en) * 2014-06-23 2015-12-30 Les Promotions Atlantiques Inc./ Atlantic Promotions Inc. Method of treating a surface of a utensil
CN105919402B (zh) * 2016-06-30 2018-11-16 陆川县浦宝铁锅厂 一种抗摔铸铁锅及其制造方法
WO2021203504A1 (zh) * 2020-04-07 2021-10-14 浙江巴赫厨具有限公司 一种具有凹凸结构的物理不粘锅及其制备方法
WO2024183255A1 (zh) * 2023-03-08 2024-09-12 浙江新唐实业有限公司 物理不粘结构及烹饪器具
GB2630053A (en) * 2023-05-15 2024-11-20 Imperial Great British Design Ltd Cookware surface
CN116763125A (zh) * 2023-06-25 2023-09-19 缙云县艾康厨具有限公司 一种多涂层的不粘锅及其制造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2320327A (en) * 1942-08-06 1943-05-25 Metallizing Engineering Co Inc Application of spray metal to metal surfaces
BE621641A (enrdf_load_stackoverflow) * 1961-08-22
US3143241A (en) * 1964-04-07 1964-08-04 Revere Copper & Brass Inc Non-stick skillet
IL27209A (en) * 1966-02-02 1971-01-28 Kidde & Co Walter Fluorocarbon coated metal surfaces
GB8719716D0 (en) * 1987-08-20 1987-09-30 Whitford Plastics Ltd Thermal spraying of stainless steel
DE4113211A1 (de) * 1991-04-23 1992-10-29 Winfried Heinzel Verfahren zum beschichten von haus- und kuechengeraetschaften

Also Published As

Publication number Publication date
DE69313000D1 (de) 1997-09-18
AU3829493A (en) 1993-11-04
EP0568322A3 (enrdf_load_stackoverflow) 1994-03-23
EP0568322A2 (en) 1993-11-03
CA2095312A1 (en) 1993-11-02
GB9209478D0 (en) 1992-06-17

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